MIPS_GCTL1_RID_SHIFT
#define MIPS_GCTL1_RID (_ULCAST_(0xff) << MIPS_GCTL1_RID_SHIFT)
uasm_i_ins(&p, GPR_T0, GPR_T1, MIPS_GCTL1_RID_SHIFT,
uasm_i_ins(&p, GPR_T0, GPR_ZERO, MIPS_GCTL1_RID_SHIFT,
<< MIPS_GCTL1_RID_SHIFT;
>> MIPS_GCTL1_RID_SHIFT);